Search International and National Patent Collections

1. (WO2017151966) SYSTEM AND METHOD FOR AXIAL ZONING OF HEATING POWER

Pub. No.:    WO/2017/151966    International Application No.:    PCT/US2017/020513
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Fri Mar 03 00:59:59 CET 2017
IPC: F01N 3/027
F01N 13/00
F01N 3/20
F01N 11/00
G01K 7/00
G01K 13/00
G01F 1/68
H01C 7/02
H01C 7/04
H05B 1/02
H05B 3/12
Applicants: WATLOW ELECTRIC MANUFACTURING COMPANY
Inventors: EVERLY, Mark
PRADUN, James, N.
ZHANG, Sanhong
Title: SYSTEM AND METHOD FOR AXIAL ZONING OF HEATING POWER
Abstract:
A heater system (20) for an exhaust system (18) is provided. The heater system (20) includes a heater (28) disposed in an exhaust conduit (32). The heater (28) includes a plurality of heating elements (38) disposed in the exhaust conduit (32). A heating control module (30) controls the plurality of heating elements (38) differently according to operating conditions specific to each heating element (38). In other forms, the heater system (20) for an exhaust system (18) has a plurality of heating zones, instead of a plurality of heating elements (38). The heating control module (30) controls the plurality of heating zones differently according to operating conditions specific to each heating zone.